Direct Semiconductor Laser Writing of Few‐Layer Graphene Polyhedra Networks for Flexible Solid‐State Supercapacitor

Liu, Chunlin; Liang, Hongru; Wu, Dun; Lu, Xiangyu; Wang, Qiang

doi:10.1002/aelm.201800092

Cited by 26 publications

(15 citation statements)

References 34 publications

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“…21 The reason may be associated with the distinct heating behaviors of PI incurred by laser irradiations of different wavelengths. 12,63 These results strongly suggest the influence of laser's wavelength on the final products, indicative of the powerful capability of highly controlled structural regulation. Other heteroatoms, such as B, S, and F, have also been doped into carbon materials under laser irradiance.…”

Section: Reviewmentioning

confidence: 83%

“…The Nd:YAG laser with a wavelength of 1,064 nm is employed to directly scan over a PI film in an ambient condition to generate porous graphene with a suitable N content of 5 wt %. 63 Nevertheless, only a minor amount of N will be detected in the final carbon materials if the Nd:YAG laser is replaced with a CO 2 one (wavelength: 10.6 mm; pulse duration: 14 ms; power density: $10 5 W cm À2 ). 21 The reason may be associated with the distinct heating behaviors of PI incurred by laser irradiations of different wavelengths.…”

Section: Reviewmentioning

confidence: 99%

“…As a result, a larger I D /I G ratio is observed from the 1,064-nm infrared laser-derived graphene. 21,63 Guan et al reported the laser-mediated reduction of GO (wavelength: 1,064 nm; pulse duration: 10 ps; power density: $10 7 W cm À2 ) in distinct reaction media, namely nitrogen atmosphere and liquid nitrogen, to modulate the intrinsic defects. The extremely cold environment provided by liquid nitrogen may retard the temperature rise, finally resulting in a product with fewer defects.…”

Section: Reviewmentioning

confidence: 99%

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Laser Irradiation of Electrode Materials for Energy Storage and Conversion

et al. 2020

Matter

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In addition to its traditional use, laser irradiation has found extended application in controlled manipulation of electrode materials for electrochemical energy storage and conversion, which are primarily enabled by the laser-driven rapid, selective, and programmable materials processing at low thermal budgets. In this Review, we summarize the recent progress of laser-mediated engineering of electrode materials, with special emphases on its capability of controlled introduction of structural defects, precise fabrication of heterostructures, and elaborate construction of integrated electrode architecturesall of which are highly desired for many electrochemical processes, yet difficult to be precisely synthesized via conventional technologies. After a brief introduction of the fundamental mechanism of laser processing, its practical use for structural regulation of electrode materials is discussed in detail. The application of these laserenabled materials for supercapacitors, rechargeable batteries, and some fundamental electrocatalytic reactions enabling energy conversion is then summarized. Finally, we highlight the challenges faced at the current stage, aiming to shed some light on the future development of this prosperous field.

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Section: Reviewmentioning

confidence: 83%

Section: Reviewmentioning

confidence: 99%

Section: Reviewmentioning

confidence: 99%

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Laser Irradiation of Electrode Materials for Energy Storage and Conversion

et al. 2020

Matter

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“…In addition, the apparent second-order band at approximately 2700 cm À1 for the Zn-5Co-1 derived carbon signied the existence of multi-layers of graphene domains, which have been conrmed by the aforementioned HRTEM analysis. 22 Unless otherwise specied, the acid treated porous carbon samples discussed below were all prepared with the BMOF of Zn-5Co-1 precursor.…”

Section: Resultsmentioning

confidence: 99%

Heteroatom-doped nanoporous carbon initiated from bimetallic molecular framework micro-rods for supercapacitor electrodes

Wang

Liang

2019

RSC Adv.

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“…Along with the continuous progress in advanced equipment, the development of the etching technique is promoted which allows diverse options. Among the plentiful varieties, some kinds of etching techniques such as photolithography, [31][32][33] laser scribing, [23,[34][35][36] and plasma etching, [37][38][39] are of high anisotropy and controllability, to a certain extent exhibiting giant potential in micromachining. Therefore, we recommend three broad categories for their wide applications in fabricating MBs and introduce their advantages and inherent defects.…”

Section: Etching Techniquementioning

confidence: 99%

Recent Advances in High‐Performance Microbatteries: Construction, Application, and Perspective

Zhu

Kan

et al. 2020

Small

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considered indispensable and stimulate great upsurge in interest on relevant researches. [1-4] Through integrating with multiple functional materials or devices, the miniaturized energy-storage device can power functional systems, such as microactuators, implantable biosensors, and wearable gadgets. [5,6] As far as the performance is concerned, the shift from disposable or nonrechargeable product to a high-energy output device or even complicated system has motivated the improvement of energy storage capability during the past decade. Generally, microsupercapacitor (MSC) possesses the advantages of fast charge/discharge rate and long cycling lifetime, making it possible for some maintenance-free wearable microelectronics and biomedical devices. [7,8] However, the energy storage gap about an order of magnitude still exists in comparison with microbattery (MB), and the insufficient energy supply restricts the widespread applications of MSC in the main power systems. [9] Serving as the primary choice for powering advanced miniaturized devices, MBs ensure sufficient energy density and maintain a stable voltage output. In general, a rechargeable battery consists of cathode, anode, and electrolyte in between, therefore it is the electrode that calls for miniaturization in size ranging from microns to centimeters. The total energy available in a MB generally depends on the active materials loaded on a certain small area. Based on this, some concepts of MB have been proposed, such as ultrathin microelectrode for high volumetric specific energy and somewhat thick microelectrode for high areal specific energy. [10,11] In terms of the dimensional ratio of MB, the thickness of microelectrode gives priority to the transport distance of ions and electrons, thus favoring the improvement in power density when compared with the macro one. [12,13] The decisive factor for the performance of MB is the reaction mechanism, and multiple battery forms have been expanded into miniaturized power supply as the supplement. Among the MBs mainly represented by lithium-ion batteries (LIBs) with organic electrolyte, various alkali metal ion batteries with abundant resources have been explored for possible substitution of lithium. [14-16] From the perspective of intrinsic safety, aqueous batteries have been developed with the merits of both inexpensive electrolyte and relatively higher power density. [17] Additionally, air batteries derived from fuel cells and ideally comprised of infinite O 2 supply for cathode reaction High-performance miniaturized energy storage devices have developed rapidly in recent years. Different from conventional energy storage devices, microbatteries assume the main responsibility for micropower supply, functionalization, and characterization platforms. Evolving from the essential goals for battery design of high power density, high energy density, and long lifetime, further practical demands for microbatteries (MBs) have been raised for the microfabrication technique and device design. Numerous studies have generally...

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Direct Semiconductor Laser Writing of Few‐Layer Graphene Polyhedra Networks for Flexible Solid‐State Supercapacitor

Abstract: Furthermore, the combination of Faradaic intercalation and non-Faradaic absorption of the Li-ions at electrodes allows our devices to have high energy density and respectable power density, cycling stability at the same time.

Cited by 26 publications

References 34 publications

Laser Irradiation of Electrode Materials for Energy Storage and Conversion

Laser Irradiation of Electrode Materials for Energy Storage and Conversion

Heteroatom-doped nanoporous carbon initiated from bimetallic molecular framework micro-rods for supercapacitor electrodes

Recent Advances in High‐Performance Microbatteries: Construction, Application, and Perspective

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